Vitor Frezarin Bueno (born 5 September 1994) is a Brazilian professional footballer who plays as an attacking midfielder for Clube do Remo. Career Botafogo-SP Born in Monte Alto, São Paulo, Bueno sta
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63e330db6bf6d4776096e1f26b956b6750b1fd42861ea205334db5271f03e8f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d70484c5-cbf0-4564-a407-44813cfcd0a4.json and https://artists.proofprofile.net/proofs/artist/d70484c5-cbf0-4564-a407-44813cfcd0a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c025abd88ee056f9c81e5f61b69460446dacb110c897e1b6d7f0163ae5754e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2380611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110ab1ea84b94539db75e2005f205f4415f280a4dcc89fce8b00829b5df79f82. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6VO2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03285a581649e447eafc8628e84354a9ee512829063b9c7e1bfe7967e90be893. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2316615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927604b11532a38dd9216ddcb89b7a0f0277a83e115e941496ae11b06e75f29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2194080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28d0130d411de9a85d8e536ef533e8e8291931b3cb016e55500d423a23e0cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2322188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5629ca05617f7cfa6ce10634a286953ba8b0a8206587fd3b6e3cad7246c35953. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH3132100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22489b27be8b9d5d12f1e1780b633c7de1577218a4a65df183dac36f34aa66c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2324030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a1f2382f3d6b566b849fbffffc2b6f0740b1df964ab37add25018102e3bcf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LE2330385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016093c753e60958d02515087fbffbd89e1bc5fb66f65933a38aa1a284e0564b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0L2391817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31ffea35f9c4fba5de743107715619934d05d23bc0d579e4d1670c5d7f3d48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6VO2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c23bb5a761042a305e85f8b3b3cea3adc441a94d67530d30df25f6f24caab47. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2337829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf464d2c4648c6a594297bd93be43f7fab10009dc469bef3592e8d7c890b64ade. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92393862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec471915c6527274da2e42fda6acdb8ea7b1b1e715941b170f46032953c2b8e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6VO2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8b61af932dbc0d3dcfc4af2213fe118277d572186f7bb53fcea5cfb2f423c3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2320836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb540b59f9adedcd9ddc3c5274164b7c30539ce850b34c9a7e2d2b0060996a64b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2294516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9e34d5e9c2ffe186337bdbf2dac11f1a4238b49557e88da6202b4476a3d95. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6VO2000009.